The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 06, 2012
Filed:
Jun. 09, 2011
Tetsuhiro Sakamoto, Kanagawa, JP;
Hisayuki Yamatsu, Tokyo, JP;
Tetsuhiro Sakamoto, Kanagawa, JP;
Hisayuki Yamatsu, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
An optical information recording method includes emitting light having a wavelength λfrom a first light source with a pulse width of time twor more and power P, emitting light having a wavelength λfrom a second light source with a pulse width of time tw, a repetition interval T, and power P, and performing information recording by simultaneously irradiating an identical part of a recording medium with the light from the first light source and the light from the second light source, in which the wavelength λand the wavelength λsatisfy λ>500 nm>λand λwhich is expressed as 1/λ+1/λ=1/λsatisfies a relationship of λ<300 nm, and emission of the first light source and emission of the second light source satisfy relationships of tw<tw, T<tw, and P>P